The Ridge Cap is used to seal the point where two upward roof slopes meet—either along the ridge or over a hip. It is secured to the metal panels using either wood grip screws or self-drilling lap screws, driven through the ribs of the metal.
Because debris, insects, and wind-driven rain can easily enter beneath the ridge cap, closures are required to partially or completely seal the opening. Closures installed under ridge caps come in two types: solid and vented.
Solid closures (also called outside closures) are the same width as the roof panels. They interlock in a continuous row directly beneath the screws that fasten the ridge cap, forming a solid, watertight, and airtight barrier.
Vented closures (also called value vent) are the same length as the panels and provide a water-resistant, insect-resistant barrier while allowing hot air to escape from the attic. This design offers effective ventilation and is often a simpler, more economical alternative to other ridge vent systems.
